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Actually, I might have come up with a better way of dealing with it :) This patch makes sure that we only use swap to implement iter_swap when value_type& = reference_type (which should be true for all forward iterators, which is in theory all we should accept!)
Right to the point! Cool. Indeed, first blush I like your patch a lot. I'm going to test it and, if nobody has issues, will commit it.
Thanks! Paolo.
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